Polycom Vortex EF2280 Reference Manual

INSTALLATION
© Polycom, Inc. 17 VORTEX EF2280 Reference Manual
ative value. If you have a positive room gain, make adjustments in the follow-
ing areas:
1. Lower the gain on the amplifier.
2. Increase the levers of the remote audio coming into the Vortex to com-
pensate for turning down the amplifier.
3. OR adjust the placement of the microphone relative to the loudspeaker.
Configure
Program Audio
Sources
Set the gains on the matrix mixer inputs from the program audio sources so
that program audio is played into the room at a level similar to that of speech
from the remote site. This should also ensure that the program audio levels
are good when sent to the remote site.
Figure 8. Room Gain Meter on the Diagnostics page of the Conference
Composer control software.
Room Gain Meter
Read Room Gain
from here

Polycom Vortex EF2280 Specifications

General

Rack capacity	1U
Frequency range	20 - 20000 Hz
Cancellation span	270 ms
Echo cancellation	65 dB
Phantom power	48 V
Nominal input level	0 dB
Output gain	-100 - 20 dB
Output impedance	33 Ω
Maximum output amplitude	23 dB
RS-232 ports	1
Audio connections	2 x 3.5mm
Parallel ports quantity	2
Input voltage	110 - 240 V
Output current	20 mA
Output voltage	5 V
Input frequency	47/63 Hz
Power consumption (typical)	30 W
Operating temperature (T-T)	0 - 40 °C

Weight and Dimensions

Weight	1800 g
Dimensions (WxDxH)	483 x 244 x 45 mm